Hayashi T

High-grade sarcomas often lack typical morphological features and exhibit no clear differentiation, often leading to a diagnosis of undifferentiated sarcoma (US). Pleomorphic leiomyosarcoma (PLMS) is a high-grade sarcoma consisting of a typ…

Regulatory T-cells (Tregs) are central to peripheral immune tolerance and act as key players that sustain the immune homeostasis required for embryo receptivity, implantation, and placentation. Treg dysfunction accelerates inflammation, ang…

Endosalpingiosis occurs in relatively young women. The incidence of endosalpingiosis exceeds that of other diseases affecting female tissues. As endosalpingiosis is a benign tumor, several women with endosalpingiosis are asymptomatic. Endos…

Epithelial ovarian cancer is classified into four major histological subtypes: serous, clear cell, endometrioid and mucinous. Ovarian clear cell carcinoma (OCCC) responds poorly to conventional chemotherapies and shows poor prognosis. Thus,…

We report a 33-year-old man who presented with recurrent right pneumothorax. Computed tomography (CT) showed the presence of a large bulla with a maximum diameter of 8 cm in the right middle lobe; he subsequently underwent bullectomy. Histo…

PURPOSE: Bladder endometriosis (BE) is rare. Deep invasive endometriosis is difficult to control with medications alone; such cases need surgical treatment. Good results of laparoscopic partial cystectomy with a transurethral (TU) resectosc…

BackgroundA majority of women from all cultures and socioeconomic levels experience myriad symptoms known as premenstrual syndrome during the days prior to menstruation. The present study investigated commonly reported symptoms in the preme…

There has been a long-standing need for guidelines on the diagnosis and treatment of keloids and hypertrophic scars that are based on an understanding of the pathomechanisms that underlie these skin fibrotic diseases. This is particularly t…

Ovarian clear cell carcinoma (OCCC) exhibits distinct phenotypes, such as resistance to chemotherapy, poor prognosis and an association with endometriosis. Biomarkers and imaging techniques currently in use are not sufficient for reliable d…

Primary retroperitoneal serous adenocarcinoma (PRSA) is an extremely rare malignancy, with only seven cases having been previously reported. We report a case of PRSA in a 42-year-old woman treated with surgical resection and adjuvant chemot…

Inflammation in the ovary, including ovulation and pelvic inflammatory disease, has been proposed to play a role in the pathogenesis of ovarian cancer. Endometriotic lesions trigger a local inflammatory reaction and have been reported to be…

The patient was a 36-year-old woman. She had previously undergone surgery for hysteromyoma and endometriosis. At 8 week of pregnancy, the fetus's heart stopped beating, and the woman underwent abortion. On the same day, she began experienci…

BACKGROUND: The relationship between fibroids and infertility remains an unsolved question, and management of intramural fibroids is controversial. During the implantation phase, uterine peristalsis is dramatically reduced, which is thought…

OBJECTIVE: Because thickening of the gallbladder wall is observed not only in patients with gallbladder cancer but also in those with benign diseases such as chronic cholecystitis and gallbladder adenomyosis, it is difficult to distinguish …

We describe a 47-year-old woman with severe aplastic anemia with genital bleeding who developed acute severe hepatitis after the administration of danazol while she was receiving cyclosporin. She had been diagnosed with severe aplastic anem…

CA125 is a new unique tumor marker for epithelial ovarian cancer, and its clinical use has recently increased considerably. We have periodically monitored 14 cases of ovarian cancer (7 cases of serous cystadenocarcinoma, 4 cases of clear ce…

Role of ERCP in the diagnosis of inflammatory lesions of the pancreas was evaluated and following conclusions were obtained. 1) Following criteria were considered to be practical for clinical diagnosis of chronic pancreatitis by ERCP; a) Mo…